ztd meaning in English
简单做
Examples
- 12h - simulation of mm5 can show the daily change tendency of ztd , zhd , zwd and pw with a bias in depicting their hourly change
Mm5模式分辨率的提高有利于改善模式对静力延迟、湿延迟和可降水量的描述和预报。 - 2 . the reanalysis fields of mm5 can reveal the distribution of zhd as a whole and has larger bias on zwd and pw than ztd
2 、 mm5模式初始场对静力延迟有较好的描述能力，但对湿延迟和可降水量的描述还存在比静力延迟更大的描述误差。 - Gps observation which is about 2km far away from radiosonde site is comparable to radiosonde with a absolute bias of 2 . 13mm on precipitable water ( pw ) observation and 1 . 28cm on zenith total delay ( ztd )
与常规探空观测相比， gps测量的可降水量有很好的代表性。在相距2km时，两种测量手段测量可降水量和总延迟量的平均绝对偏差分别为2 . 13mm和1 . 28cm 。 - The variation of ztd is mainly caused by the zenith wet delay ( zwd ) . zenith hydrostatic delay ( zhd ) and zwd from different gps sites exhibit individual features that zhd has a obvious periodic change and zwd is related to weather
总延迟的变化主要是由湿延迟的变化而引起，其中静力延迟变化呈现了明显的周期性，而湿延迟的变化与天气过程相关联。 - Mm5 has a ability of simulating zwd on the whole with a bias larger than zhd ' s , which manipulates the bias of ztd simulation . the increase of mm5 resolution can improve the ability of simulating and depicting zhd , zwd and pw distribution . kf , bm and grell parametric schemes have a close ability of simulating pw at the beginning of 10 - 11h integration of mm5 model , and then the prediction bias of pw increases obviously after 20 - 21h integration
在mm5模式24h积分的前10 11h ，选用kf 、 bm和grell三种积云参数化方案模式对可降水量的预报偏差基本接近，对可降水量具有较好的预报能力，其后三种积云参数化方案对可降水量的预报偏差差异增大，模式积分至20 21h后对可降水量的预报能力明显减小。